Air pump for deep wells



March 24, 1925.

' R. H. TUCKER AIR PUMP FOR DEEP WELLS Filed Dec. 27. 13923 w Z MV JZH l mmmmmmmmmmykm mmm Deep lVells, of which Patented Mar. 24, 1925.

UNITED lSTATES,

RALPH n'. TUCKER, or. Los ANGELES, CALIFORNIA.

l AIB PUMP FOB' DEEP WELLS.

'Appuanon To `all whom it may concern: v

Be it known that I, RALPH'H. TUCKER, a citizen of the United States, Los Angeles, in the county of Los Angeles and State of California', have invented new and useful Improvements in Air Pumps for the 4following is a specification. My invention relates to air driven pumps for Adeep wells and consists of the novel features herein shown, described and v claimed.

i erably located in An object of my invention is to make an improved air driven reciprocating pump. Another object is to make a pump of the class described in which all of the apparatus is hung upon an -air pipe to bel inserted or removed from the oil pipe. -Other objects will appear' from the specifications and drawings.

Fig. 1 is a verti-cal central section of a well and a pump embodying the principles of my invention.

Fig. 2 is a horizontal cross section onthe line 2-2 of Fig` 1 and looking downwardly. The lower end of the wellcasing 1 has erforations 2 in the zone from which thev iquid is to be drawn and the pump is pref- 3 extends downwardly from the top .oi the ground to a point near where the pump is to 'be located, a reducing coupling 4 1s mounted on the lower end of the tube 3 and the pump cylinder 5 is screwed into the lower end of 5 being `au size smaller in cross section than the tube 3 so that the upper end of the cylinder -5 forms a shoulder 6. A beveled supporting seat 7 is formed at the lower end of the cylinder 5 and there is an internal screw' thread 8 below the seat so that a. supporting pipe might be screwed to the cylinder and extend downwardly. If

desired this pipe might be a strainer. The footi valve consists of a ring 9 having a beveled periphery to lit theseat 7 and having an internal screw thread into which the ring- 10 fits, said ring having avertieal opening 11 and a beveled seat 12 andathe ball 13 fitting upon the seat 12.l A spider extends upwardly from the footvalve and consists of four arms 14'and aV central hub 15 connectingthe upper ends of the arms, the lower ends being formed integral with the ring 9. A-pumpplunger16 ts in the cylinder .5 above the spider and has upresiding at v .the upper end this zone. The pump tube the coupling 4, said cylinderV med December 27,1923. Serial No,` 682,851.

wardly openin valves 17. A piston rod 18 is fixed in the ub 15 and extends upwardly. An air piston cylinder 19 has a reduced lower end 20'screwed through the center o ing u'pon the piston ro 21 is mounted upon the upper end of the rod 18 in the cylinder 19, a cylinder head 22 is fixed in the cylinder 19 above the pis-- ton 21. Outlet check-valves 23 lead through the wall of the cylinder 19 near its lower end and discharge upwardly. A hollow stem 24 extends upwardly 22,. and an expansive coil spring 25 1s mounted around the stem 24 and rests upon the head 22. A spring seat 26 is slidingly mounted upon the stem 24 and fits against of the spring 25. A chambered spider hub 27 is adapted to receive the screw threaded portion of the spring Afrom the head the plunger 16 and forming a sliding bear?.

d 18. The piston seat 26 and make a stuing box around the stem 24. Spokes 28 'extend radially from the hub 27 and are formed integral with the ring 29 which slides freely through the pump tube 3. and rests upon the'shoulder -6. The hub 27 forms a stop 30 and anair pipe section 31 extends upwardly from the stop, braces 32 connect the pipe section 31 to the ring 29. `A head 33 is xed upon the of the stem 24 in the pipeI section 31 and is adapted to engage the stop to hold the stem 24 from pulling out of the hub 27 The air pipe 34 is connected tothe upper end of the air pipe section 31 by a coupling 35 and the air pipe extends to the upper end of the well so that by pulling up the air pipe 34 the entire mechanism of the pump may e withdrawn from the cylinder 5 and tube 3 and in like man-` ner the mechanism may be inserted. When sulicient air pressure is sent down the air pipes 34 it will pass through the stem to the cylinder 19 above piston 21, and will -raise the cylinder head 22 thereby raising the p1unger`16 and raising the column of liquid and drawing in more liquid.

When the cylinder 19 is raised enough for the valves 23 to pass above the piston leasedv between the 4the piston rod 18. Instead 25 and the liquid will pass upwardly through the valve 17.

A continued supply of air pressure Will cause the plunger 16 to reciprocate and force the liquid upwardly through the pump tube 3.

Reducing the lower end of the cylinder 19 enlarges the area which may be used in making the valves 17 and facilitates the connection of the cylinder 19 to the plunger 16 and making the sliding of reciprocating the piston 2l as is usual with the plunger, the piston is held stationary by connecting the rod 18 to the spider valve and the cylinder 19 is reciprocated to operate the plunger.

Thus I have produced an air driven reciprocatingpump comprising apump tube, a pump cylinder at the bottom of the pump tube, said cylinder being smaller than the tube and forming an internal shoulder at the junction, a supporting seat at the bottom of the'pump cylinder, a foot valve resting upon the seat, a spider extending upwardly from the foot valve, a. valved pump plunger in the cylinder above the spider, a piston rod extending upwardly from the spider, a piston'cylinder around the piston rod and having .a reduced lower end secured to the plunge-r and forming a sliding bearing around the iston rod, a piston upon the piston -rod 1n the piston cylinder, a head in the piston cylinder above the piston, outlet check valves leading through the wall of the piston cylinder and discharging upwardly, a hollow stem extending upwardly from the cylinder head, an expansive spring upon the stem against the head, a spring seat slidingly mounted upon the upper end of the stem against the springJ and having an external screw thread, a chambered spider hub into which the spring seat is screwed to form a stuting box around the stem and to form a stop, an air pipe section extending upwardly from the stop, a .head upon the stem above the stop, a spider ring connected to the spider hub and air pipe section to slide in the pump tube and rest upon the shoulder formed by the p ump cylinder, an air pipe connected to the air pipe section, so that the entire pump works may be inserted or removed by operating the air pipe, and so that when suficient air pressure is sent down the air pipe the piston cylinder will be raised until bearing around and to the foot the outlet valves are above the piston, thus raising the plunger and the liquid on top of the plunger and drawing more liquid through'the foot. valve, and then the air pressure will escape through the outlet valves and then the piston cylinder and plunger will move downwardly until the air pressure is restored, and the plunger will continue to-reciprocate as long as the air pressure is sufficient.

Various changes may be made without departing from the spirit of my invention as claimed.

I claim:

A pump tube, a pump cylinder at the bottom of the pump tube, there being a shoulder at the top of the pump cylinder, a supporting seat at the bottom of the pump cylinder, a foot valve resting upon the seat, a piston rod extending upwardly and rigidly mounted relative to the foot va-lve,'a valved pump plunger in the pump cylinder, a piston ,cylinder around the piston rod and having a reduced lower end secured through the plunger and forming a sliding bearing around the piston rod, a piston upon the piston rod in the piston cylinder, a head in the piston cylinder above the piston, outlet check valves leading through the wall of the piston cylinder and discharging upwardly, a`hollow stem. extending upwardly from the cylinder head, an expansive spring upon the stem against the head, a spring seat slidingly mounted upon the upper end of the stem against the spring and having an external screw thread, a. chambered spider hub into which the spring seat is screwed to form a stuiiing box around the stem, said hub forming a stop, an air pipe section extending upwardly from the stop, a head upon the stem above the stop, a spider ring connected to the spider hub and air.

pipe section to slide in the pump tube and llest upon the shoulder at the upper end oi' the pump cylinder, and an air pipe connected to the air pipe section, so that the entire -mechanism may be made up and artached to the air pipe section and inserted into the pump tube to rest upon the shoulder and the seat and so that the mechanism may be withdrawn by pulling'up the air p l1211 testimony whereof I have signed my. name to this specification. Y

RALPH H. TUCKER. 

